Roller side bearing



PATENT OFFICE.

WALTER OTLTNTON ROCKENSTIRE, OF WATERVLIET, NEW YORK.

ROLLER srnn BEARING.

Application filed August 2, 1826. Serial No. 126,414.

This invention relates to side bearings for railway cars, and hasfor itsprincipal object to provide an improved construction of .devices of thecharacter described, wherein the i bearing element, suchas a roller, maybe readily adjusted to various heights. A further object is to produce astructure wherein the bearing element is permitted to tip sideways tomeet the tipping of the car body. to Other features of invention willappear from time to time as the following description proceeds.

In the drawings,

Figure 1 is a longitudinal section of a side hearing, constructed inaccordance with my invention, with parts thereof shown in elevation.

Figure 2 is a transverse sectiontaken on line 2-2 of Figure 1. V Figure3 is a top plan view of the device shown in Figure 1.

Figure 4 is a view in perspective showing the top of one of theadjusting wedges.

Figure 5 is a bottom view of one of the adjusting wedges. g

Figure 6 is a View in perspective showing the top of a roller support.

Figure 7 is a detail view of the roller.

Referring to the details of the embodiment of the invention illustratedin the drawings,

the same is shown as applied to a roller;

' bearing element 10, having .a curved support or base 11 upon which itrides so as to be automatically elevated when the cooperat ng assurfaces of the truck and bolster are moving relative to each other, asfor instance in This feature of a curved is well known in the art and isshown herein merel by way of an illustrative embodiment o my invention,which maybe equally applicable to any other suitable form of bearingelement.

Referring to the means for adjusting the A elevation of the bearingelement, including the supportlil, the same comprises a pair of wedges1212 disposed within and at opposite ends of a hollow base member. Thisbasemember preferably has sidewalls opening at thetop,

bearing are disposed therein. The wedges 12-1 2 have downwardly andinwardly inclined faces 15-15 which engage correspondin inclined faces1616 formedat opposite en s of the bearing support 11.

An adjustment screw rod 20 is arranged longitudinally adjacent thebottom of the rounding curves. support for a roller ill) and the severalparts of thebase member 13, and downwardly opening I slots 21-21 areprovided longitudinally of the bottom face of wedges 12--12 so as toaccommodate the screw rod 20 in a suitable manner. The arrangement issuch that the wedges 12-12 rest upon the bottom of the base member 13and'operate to raise or lower the superimposed bearing support 11 by"relative movement of the wedges toward and away from each other. 4

Movement of the wed es is controlled by the screw rod 20, in thepreferred form shown, this screw having right and left hand threadedportions 25 and 26 at opposite ends thereof, each of said threadedportions engaging nuts 27 and 28which are disposed in cooperatingposition in recesses 29 and30 respectively, formed in the lower facesofthe wedges 1212.' These nuts areadapted to have close fitting engagementin their respective recesses so as to prevent their rotation when thescrew 20 is rotated relative thereto, but the wedges are free to beliftedoff the rod 20 and nuts 27 and 28 when de sired. The screw rod 20is provided with an end portion 31- extending beyond the end ofth'ecasing or base member 13, in position to be readily manipulated bysuitable tools,

such as a wrench, when it is desired to ad just the wedges relative toeach other- As will be seen from Figure 1, the screw rod passes throughan enlarged opening 32 in an upright part13 at the end of the basemember 13, and is provided with a collar 33 pinned thereon, which isadapted to engage the inner face of the part 13, while a nut 34: isthreaded on the outer end of the screw rod 20. With this arrangementthenut 34f may be screwed tightly against the part 13 so as to draw thecollar 33 into frictional engagement on the opposite side of the part 13andthus lock the screw against rotation.

is'then free to be turned in either direction and move' the wedgestoward or away from each other through the medium of nuts 27 and 28, itbeing observed however that the that. the bearing arts 15 -45 of theuppersurfaces 15 -l5 o wedges 12-12 are convex '1 When the nut 34 isloosened the screw rod 20 I in form, .disposed longitudinally of thewedges, and are adapted to have cooperating engagement with concavebearing surfaces 16*-16 formed on the lower faces 16716 of the bearingsupport 11.. As will be seen from the drawings, the arrangement is suchthat the bearing support 11 with its roller 10 is provided with meansfor accommodating itself to various angular positions transversely ofthe axis of the roller.

The uses and operation of the device above described will now be clearto those familiar with the art. The bearing element and its support havearcuate cooperating bearing surfaces disposed longitudinally of thedevice, in the form shown the convex supporting surface comprising partsof the adjustable wedge members, as described.

While I have illustrated and described one particular embodiment of myinvention, it will be understood that I do not wish to be limited to theexact construction shown and described, but that various changes andmodifications may be'made without departing from the spirit and scope ofmy invention.

I claim as my invention:

1. In a side frame bearing, a base, a bearing member, and adjustablesupporting means for said bearing member comprisin a pair of wedgesdisposed at opposite ends 0 said bearing member said bearing member andsaid wedges having cooperating arcuate bearing surfaces curved intransverse section a screw member disposed longitudinally of said base,a pair of nuts threaded in opposite directions on said screw member, apair of wedges disposed at opposite ends of said bearing member and eachprovided with slots for said screw, and with recesses for receiving oneof said nuts therein in non-rotating engagement, said wedges havingconvex upper surfaces, and said bearing member having cooperatingconcave lower surfaces each extending longitudinally thereof, wherebysaid bearing member ma accommodate itself to lateral tipping 0 the carbody.

Signed at Schenectady, N. Y. this 24th day of J u'ly, 1926.

WALTER CLINTON ROCKENSTIRE.

